8mm Forum: Small issue with my Eiki 50mm 1.2 lens...

This is topic Small issue with my Eiki 50mm 1.2 lens... in forum 16mm Forum at 8mm Forum.

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Posted by Jan Bister (Member # 332) on September 18, 2005, 09:39 PM:

My Eiki SSL-0 came with its standard 50mm 1:1.2 lens... and I took the lens and completely disassembled it. Meaning I now have an empty barrel (which fits into the projector's lens holder) as well as several lenses and distance rings plus threaded rings to screw in and hold things in place.

Why I did this is a long story and not important right now... [Roll Eyes]

However, I unexpectedly find myself in need of this 50mm lens once again. And the problem is, I have NO clue how to put it back together - i.e. what goes where and in what orientation (seeing as that some lenses are shaped differently on both sides)! And it's surprisingly hard finding another 50mm Eiki lens on eBay or anywhere else. [Frown]

Who can help and show me how things go back in there? Alternatively, who's willing to let me have a 50mm Eiki lens for cheap?

Posted by John A. Pommon (Member # 292) on September 18, 2005, 11:07 PM:

Hi Jan - Here's a few options to look over:

38MM (1 1/2 nich) PROJECTION LENS FOR EIKI Item number: 7547069234

EIKI 16mm Projector Lens Zoom 50mm MINT Condition NR Item number: 7545274143

16 MM B&H ZOOM LENS & C RING ADAPTOR & EIKI LENS Item number: 7546085203.

16MM EIKI LARGE IMAGE LENS - FOR 16-C SCOPE LENS Item number: 6432657133

Posted by Jan Bister (Member # 332) on September 19, 2005, 12:32 AM:

Thanks for these pointers, second item sounds promising. [Smile]

Are you the same John who told the seller that this was not a zoom lens? [Big Grin]

Well, here's my dilemma... I just got my first 16mm scope print so I will eventually need a scope lens to watch it properly. As I've been told, scope lenses stretch the image horizontally by 2x whereas vertically it stays the same... I've also been warned that certain scope lenses may cause vignetting or egg-shaped images if used with anything much shorter than a 50mm (2") lens.

Since I now have a 25mm (1" lens) - fashioned up from a super-8 lens stuffed inside the Eiki 50mm barrel - and plan to set up the projector such that it just fills my entire screen with that lens, I figure using a 50mm prime lens plus a scope lens will give me the same image width but half the image height. That way I won't have to change projection distance. Am I thinking correctly here?

Anybody else ever had to deal with this practical dilemma? (switching between flat and scope without having to change projetion distance?) [Eek!]

Posted by John A. Pommon (Member # 292) on September 19, 2005, 12:44 AM:

"Thanks for these pointers, second item sounds promising. Are you the same John who told the seller that this was not a zoom lens?"

No.

Posted by Jan Bister (Member # 332) on September 19, 2005, 01:25 AM:

Wow, simple and to the point. [Smile]

Posted by John Whittle (Member # 22) on September 19, 2005, 08:45 PM:

quote:
Thanks for these pointers, second item sounds promising. Are you the same John who told the seller that this was not a zoom lens?

Well, here's my dilemma... I just got my first 16mm scope print so I will eventually need a scope lens to watch it properly. As I've been told, scope lenses stretch the image horizontally by 2x whereas vertically it stays the same... I've also been warned that certain scope lenses may cause vignetting or egg-shaped images if used with anything much shorter than a 50mm (2") lens.

I was the one that told him it wasn't a zoom lens for one simple reason, it isn't. It's exactly like the lens you took apart.

As for scope lenses and back up lenses. On the Eiki you can use a 38mm lens behind the scope lens without a problem, anything wider and you MAY have trouble depending on the throw. A larger scope lens (the "D" size vs the "C" size) might help but the adapter holder from Eiki is long obsolete, you'll have better luck finding a "C" size holder. When it's installed you can leave the lens on the projector and just flip it up when you have a scope film and it'll be aligned and focused.

One word about taking lenses apart:

DON'T.

John

Posted by Jan Bister (Member # 332) on September 19, 2005, 09:19 PM:

Kind of late with that bit of advice, but point taken nevertheless. I didn't really see any other (inexpensive) way of getting myself an empty lens barrel besides sacrificing the 50mm lens I had [Roll Eyes]

but don't worry - I'm not normally that destructive... nor would I dream of taking any other lens apart unless it were cheap and of low quality (or in this case... just cheap). [Eek!]

I did win me a Kalart Victorscope anamorphic lens on eBay just now, though... woohoo!... if and how it'll fit on my (modified-to-1-inch) Eiki lens remains to be seen when it gets there, if I have to fashion up a lens holder for this gadget then I'll cross that bridge when I get to it.

[Smile]

Posted by Steven Sigel (Member # 21) on September 19, 2005, 10:15 PM:

Jan --

I've got an extra 50mm Eiki lens. $20 + shipping...

email me if you want it... (sts (at) sigel (dot) net)

Posted by John A. Pommon (Member # 292) on September 19, 2005, 10:15 PM:

Several years ago I took a lens apart to clean it.
After wasting an evening it ended up in the garbage can.
John said a mouthfull.

Resist Temptation . . no matter what!

Posted by Jan Bister (Member # 332) on September 20, 2005, 01:52 PM:

Steve,

thanks for the offer - will take you up on it if I find I need another 50mm lens, but for now... I'm waiting and seeing. [Smile]

As for the 50mm lens I took apart, I don't even think of it as a loss... for I was able to find a suitable super-8 lens (incidentally a Bell & Howell f1.6 zoom lens), put it in the Eiki barrel, and get myself a nice big 16mm picture with no vignetting or distorted frame. I ought to post some pictures of it soon... [Smile]

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